Hi Mom-6, we're making those balls for Toys for Tots. When you go to put the sections together, lay out 4 pieces so that they make a complete circle - you'll have 3 circles of 4 sections each. Sew the tips of the 4"orange sections" together forming a circle. Do this to all three sections. This next part is hard to explain, but you fiddle with the 3 sections until you get them to go together forming the ball. I hope this helps a little.
We've made them in flannel for babies, and in denim for the older kids. Once you get the hang of it, they're not difficult.